Your Water

Drinking Water Standards

The Truckee Meadows Water Authority, your water purveyor, owns and operates two water treatment facilities in the Reno area and employs highly trained State Certified Water Treatment Plant Operators. Each facility consistently meets and exceeds all State and Federal Drinking Water Standards.

Chalk Bluff is a highly efficient water treatment facility that can supply water to TMWA's entire service territory. Built in 1996 to replace three aging facilities, Chalk Bluff has the capacity to treat 90 million gallons daily, with the ability to expand to treat an additional 30 million gallons per day.

The Glendale Water Treatment Facility, built in 1976, underwent substantial upgrades in 1996 and 2010, and is capable of treating 37 million gallons of water per day, supplementing the peak demand in the summer months.

Chalk Bluff Water Treatment Facility
One of TMWA's state-of-the-art water treatment plants

Treatment begins when water is brought into the raw water basins where settling of heavy grit takes place. Chemicals are added to form large particles in the floculation process that settle out in the sedimentation process. Water is then filtered through sand and anthracite coal to remove minuscule particles suspended in the water. Chlorine is then added for disinfection. Treatment begins with the intake of Raw Water.

Raw Water

Raw water from the Truckee River is delivered to the Chalk Bluff Water Treatment Facility (and the Glendale Water Treatment Plant during summer months) from the Highland Ditch and from a pumping facility located south of Chalk Bluff next to the river. Once the raw water reaches the Treatment Plant it enters the Raw Water Basins.

Chalk Bluff Water Treatment Facility

Raw Water Basin

Pre-treatment is an important process in the operation of any potable water treatment facility. Pre-treatment begins with the removal of larger debris, such as logs and large leaves, by passing the water through bar screens. After passing through bar screens, the water enters raw water basins where the velocity of the water is slowed allowing heavier sediment and grit to settle to the bottom of the basins where it is periodically removed in a separate process using a floating Dredge. After the Raw Water Basins, the water passes to the next stage of the treatment process: the Screening Facility.



At the end of the Raw Water Basins are automatic screens that remove smaller debris such as twigs, smaller leaves, and pieces of tree bark. These screens are the final step in the pre-treatment process and the water is now ready for the first stage of the primary treatment processes: CoagulationClick here to see the rest of the treatment process.

Raw Water Screen | Close-up view of Raw Water Screen